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btrfs-progs: docs: update fi du regarding recursion 

State that 'fi du' does descend to subvolumes.

Issue: #185
Signed-off-by: David Sterba <dsterba@suse.com>
master
David Sterba 2019-07-02 15:24:32 +02:00
parent 534c296121
commit 8d3da70b36
1 changed files with 3 additions and 2 deletions
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5
Documentation/btrfs-filesystem.asciidoc
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@ -146,8 +146,9 @@ described below.
+
Each argument to 'btrfs filesystem du' will have a 'set shared' value
calculated for it. We define each 'set' as those files found by a
recursive search of an argument. The 'set shared' value
then is a sum of all shared space referenced by the set.
recursive search of an argument (recursion descends to subvolumes but not
mount points). The 'set shared' value then is a sum of all shared space
referenced by the set.
+
'set shared' takes into account overlapping shared extents, hence it
isn't as simple as adding up shared extents.